ASTROSAT CZTI

Data Quality Report

Orbit 57717

Creation date: 2026-05-29T17:12:11.853785
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_125T09_9000006578_57717cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57717cztM0_level2_quad_clean.evt
Size (bytes)678,127,680100,897,920
Size646.7 MB 96.2 MB
Events in quadrant A3,233,492707,163
Events in quadrant B5,739,100700,483
Events in quadrant C8,939,303554,140
Events in quadrant D6,619,066579,962

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151670
B0221131
C0316900
D0246920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7368310.420738%
B736879110.735613%
C7368159821.688382%
D736879410.776330%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7368 7368 5 5 0.07% 0.07%
B 7367 7367 428 428 5.81% 5.81%
C 7368 7368 1256 1256 17.05% 17.05%
D 7368 7368 828 828 11.24% 11.24%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 6 64914 326.68 800 777 196.3
A 3 128 50581 253.68 800 777 196.3
A 3 14 12315 58.77 800 777 196.3
B 4 171 1918671 11853.53 763 735 161.8
B 4 80 379240 2339.3 763 735 161.8
B 0 155 127903 785.94 763 735 161.8
C 15 224 2888591 14889.58 713 705 194.0
C 12 254 2331118 12015.32 713 705 194.0
C 12 252 433003 2228.87 713 705 194.0
D 8 160 2682711 12746.55 750 717 210.4
D 3 12 350165 1660.8 750 717 210.4
D 3 224 197981 937.52 750 717 210.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter